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Bee Branch Stormwater Pumping Station Project (Phase V of the Bee Branch Watershed Flood Mitigation Project)_InitiateCity of Dubuque City Council Meeting Copyrighted April 18, 2022 Items to be set for Public Hearing # 1. ITEM TITLE: Bee Branch Stormwater Pumping Station Project (Phase V of the Bee Branch Watershed Flood Mitigation Project) SUMMARY: City Manager recommending City Council adoption of the resolutions preliminarily approving the proposed plans, specifications, form of contract, and construction estimate in the amount of $15,790,000; establishing the date of the public hearing for May 2, 2022; and authorizing the City Engineer to advertise for bids for the Bee Branch Stormwater Pumping Station Project. RESOLUTION Preliminary approval of plans, specifications, form of contract, and estimated cost; setting date of public hearing on plans, specifications, form of contract, and estimated cost; and ordering the advertisement for bids for the Bee Branch Stormwater Pumping Station Project SUGGESTED Receive and File; Adopt Resolution(s), Set Public Hearing for May 2, DISPOSITION: 2022Suggested Disposition: ATTACHMENTS: Description Bee Branch Gate and Pump Replacement Project- MVM Memo Staff Memo Resolution Notice of Hearing Notice to Bidders Type City Manager Memo Staff Memo Resolutions Supporting Documentation Supporting Documentation THE C Dubuque DUj!BQTE WAWca 914 Masterpiece on the Mississippi YP pp aoo�•o 13 zai7*20*�oi9 TO: The Honorable Mayor and City Council Members FROM: Michael C. Van Milligen, City Manager SUBJECT: Bee Branch Stormwater Pumping Station Project (Phase V of the Bee Branch Watershed Flood Mitigation Project) CIP# 3402608 and CIP#7202608 DATE: April 12, 2022 City Engineer Gus Psihoyos is recommending City Council adoption of the resolutions preliminarily approving the proposed plans, specifications, form of contract, and construction estimate in the amount of $15,790,000; establishing the date of the public hearing for May 2, 2022; and authorizing the City Engineer to advertise for bids for the Bee Branch Stormwater Pumping Station Project. I concur with the recommendation and respectfully request Mayor and City Council approval. k�4 Mic ael C. Van Milligen MCVM:sv Attachment CC' Crenna Brumwell, City Attorney Cori Burbach, Assistant City Manager Gus Psihoyos, City Engineer THE C DUUB___&_FEE Masterpiece on the Mississippi TO: Michael C. Van Milligen, City Manager FROM: Gus Psihoyos, City Engineer Dubuque AA•Amerlu My 2007-2012.2013 2017*2019 SUBJECT: Bee Branch Stormwater Pumping Station Project (Phase V of the Bee Branch Watershed Flood Mitigation Project) CIP# 3402608 and CIP#7202608 DATE: April 6, 2022 INTRODUCTION The purpose of this memo is to seek authorization to initiate the public bidding process for the Bee Branch Stormwater Pumping Station Project (also known as the Bee Branch Gate & Pump Replacement Project and Phase V of the Bee Branch Watershed Flood Mitigation Project). BACKGROUND Between 1999 and 2011, there have been six Presidential Disaster Declarations which impacted the Bee Branch Creek Watershed. The Drainage Basin Master Plan was completed and adopted by the City Council in 2001. It identified a flood -prone area with over 1,000 properties. And according to a subsequent study in 2009 by the Federal Emergency Management Agency (FEMA), there are 1,373 properties in the flood prone, at -risk area. In addition to homes, there are over 70 businesses in the at -risk area with over $500 million in annual sales. The flood prone area in the Bee Branch Watershed encompasses historic neighborhoods offering some of the community's most affordable workforce housing. Most residents are working families, many are elderly -- those least likely to recover from repetitive flood loss. Repetitive flood damage leads to disinvestment: from 2004 to 2009, while commercial property values grew by 39% citywide, they fell by 6% in the Bee Branch Watershed flood prone area. Since 2001, the City has implemented many of the improvements outlined in the Drainage Basin Master Plan. But since 2001 several intense, storm events have occurred in the Dubuque metropolitan area so that revisiting the predicted hydrology and hydraulic behavior of the Bee Branch Watershed was appropriate. Over a twelve- year period (starting in 1999), there several statistically rare rainstorms: three 100-year storms, two 50-year storms, one 25-year storm, and one 10-year storm. This prompted the City to update/amend the Drainage Basin Master Plan for the Bee Branch Watershed. In November of 2013, the City Council passed Resolution 335-13 adopting the 2013 Drainage Basin Master Plan Amendment. The amended Drainage Basin Master Plan outlined several improvements throughout the Bee Branch watershed to mitigate the effects of future flooding and disasters. Collectively, the improvements form the basis of the multi -phase Bee Branch Watershed Flood Mitigation Project outlined below. Table 1. Twelve phases of the Bee Branch Watershed Flood Mitigation Project Phase Description Status 1 Carter Road Detention Basin Complete 2 West 32nd Street Detention Basin Complete 3 Historic Millwork District Complete 4 Lower Bee Branch Creek Restoration Complete 5 Flood Mitigation Gate Replacement Under Design 6 Impervious Surface Reduction (Green Alleys) Under Design' 7 Upper Bee Branch Creek Restoration Under Construction 8 22nd Street Storm Sewer Improvements Complete to N. Main St.3 9 Flood Mitigation Maintenance Facility Site Cleanup 10 North End Storm Sewer Improvements 11 Water Plant Flood Protection 12 17th Street Storm Sewer Improvements Complete to Heeb St.4 ' 80 of the 240 alleys in the Bee Branch Watershed have been reconstructed as "green", pervious alleys. Several are currently under design. 2The Upper Bee Branch Creek Restoration Project includes the improvements associated with the Upper Bee Branch Railroad Culverts Project currently under construction. 3Design is complete to Kane Street. 4Design is complete to Angela St., 60% design to Kirkwood St., 30% design to Rosedale. The multi -phased Bee Branch Watershed Flood Mitigation Project represents a fiscally responsible investment that reflects a holistic approach to mitigate flooding: improving water quality, stimulating investment, and enhancing the quality of life of watershed residents. On December 4, 2013, the Iowa Flood Mitigation Board voted to approve the City's use of $98,494,178 for the Bee Branch Watershed Flood Mitigation Project. On February 3, 2014 the City Council adopted Resolution 31-14 authorizing the execution of an agreement with the State of Iowa Flood Mitigation Board and authorizing the City's use of sales tax increment funding for the Bee Branch Watershed Flood Mitigation Project. A great deal of the debt the City of Dubuque has incurred is for implementation of this flood mitigation plan. The state grant funding and the subsequent debt issuances allow much of the protection to be provided as soon as reasonably possible instead delaying the benefits for 20 years or more. With a total estimated cost of $250 million, the Bee Branch Watershed Flood Mitigation Project will prevent an estimated $582 million in damages over the 100-year design life of the project. With more than $163 million in funding assistance, for every dollar invested by Dubuque citizens it will prevent almost seven dollars in flood damage. On March 5, 2014 the City Council passed Ordinance 16-14 establishing the stormwater utility fee rate structure necessary to fund the various phases and improvements associated with the Bee Branch Watershed Flood Mitigation Project. The result was that the lowering of rates previously for Fiscal Years 2015, 2016, 2017, 2018, 2019, 2020, and 2021. The City has been able to provide stormwater management services within the rate structure established by Ordinance 16-14 which reflected that the billing rate for the average homeowner was to increase by 6.76% in FY21 (from $8.29 per month to $8.85 per month). However, due to the uncertain economic impacts of the current COVID-19 pandemic, the rate structure was reconsidered for Fiscal Year 2021. With minor adjustments to planned Capital Improvement Program projects, reducing some budgets and delaying a few others, that the City was able to delay the 6.76% increased planned for FY21 until FY22. With the adoption of Ordinance 21-20, the rate for the average homeowner remained at $8.29 for FY21. With the adoption of Ordinance 10-21, the fee increased in FY22 to $8.85 per month. The original scope of the Flood Mitigation Gate Replacement improvements involved replacing the gate structure associated with the pumping facility on Kerper Boulevard just south of 16t" Street that functions as part of the floodwall/levee system. And the FY15 and FY16 CIP budgets identified $2,100,000 to replace the flood gates. In December of 2015, the City Council authorized the hiring of IIW, P.C. (now Origin Design) for design and engineering services for the project. In addition, Origin Design was to include improvements to the electrical system that energizes the pump station. Finally, Origin Design was to identify and investigate possible modifications to the existing 16t" infrastructure that would "provide additional means for releasing water from the Bee Branch retention under various circumstances such as when the gates are open, when they are closed, and depending on the river stage." In April of 2017, Origin Design presented a series of possible enhancements that improved access to the facility; an updated, more reliable electrical service; and provided space for the use of additional, temporary pumps to augment the existing, permanent pumps. The estimated cost for the improvements exceeded $3.3 million, considerably more than the budget. Due to the record rainfalls in 2010 and 2011 that have impacted the Bee Branch Watershed, it was prudent to consider if even the modest improvements were sufficient. Moreover, some of the facility elements (i.e., the two 90,000 gallon per minute pumps) pre -date the construction of the floodwall/levee system completed circa 1974. Therefore, staff from the Public Works and Engineering Departments worked with Origin Design to further develop improvements to the facility that would indeed improve drainage when the gates are open and when operating under Mississippi "flood" conditions when the gates are closed. Of the five alternatives analyzed, the improvements associated with the preferred alternative, now referred to as the Bee Branch Gate & Pump Station Project, was selected because it would best handle the severe flooding that has been occurring since 1999 and, in concert with the Bee Branch Creek Restoration Project (including the Bee Branch Railroad Culverts Project), would provide flood protection for the 500-year rainstorm. The cost to build a new flood pumping station capable of handling flows from the Bee Branch Creek was initially estimated to cost approximately $10 million. To better afford the project improvements associated with all the phases of the Bee Branch Watershed Flood Mitigation Project, and in particular the increased costs associated with the Bee Branch Gate & Pump Station Project, the City sought additional financial assistance. In December of 2018, the City Council adopted Resolution 368-18, approving an application for $4,000,000.00 in U. S. Economic Development Administration (EDA) grant funding for the 16th Street Detention Basin Flood Gates Project, otherwise known as the Bee Branch Gate & Pump Station Project. The City was subsequently awarded $2,500,000.00 in EDA grant funding for the Branch Flood Mitigation Gate & Pump Station Project. In May of 2019, the City Council adopted Resolution 152-19, authorizing entering into a Financial Assistance Award Agreement with EDA as necessary for the City's use of $2,500,000 in EDA grant funding for the Bee Branch Gate & Pump Station Project. The City Council also pledged "the amount of $6,635,000.00 from state sales tax increment or local stormwater utility proceeds...." Per the Agreement, the project must be complete by April 11, 2024. DISCUSSION The proposed Bee Branch Stormwater Pumping Station Project (Project) involves construction of a new pump station that includes the following elements: • New flood gates; • Replacement of the two existing flood pumps with four new pumps; • Replacement and updating of the electrical service to current standards; and • Installation of a back-up generator for the additional pumps to address the needed resiliency being demanded by the storms of recent years. The new flood gates will be constructed on the basin side of the levee (on the west side of Kerper Boulevard) which allows for the pumps to operate more efficiently, eliminates the environmental concerns associated with the Higgins Eye Clams found on the river side of the levee, and allows for operation of the existing facility to maintain flood protection during construction of the new facility. Instead of utilizing the two existing 90,000 gallon per minute (gpm) pumps that are more than 50 years old, the new facility will have four 90,000 gpm pumps. This allows for redundancy in the event of a pump failure. In concert with the Bee Branch Creek Restoration Project (including the Bee Branch Railroad Culverts Project), the proposed project improvements will provide a system that can accommodate the flooding that occurred between 1999 and 2011 — flooding that has resulted in six presidential disaster declarations due to public and private property damage, flooding that has impacted more than 1,300 homes and businesses. It also provides for additional resiliency options as rainstorms increase in both depth and intensity. PROJECT SCHEDULE The schedule for the Project is as follows: Initiate Public Bidding Process Publish Notice to Bidders, Advertise for Bids Publish Public Hearing Notice on Plans & Specs Public Hearing on Plans & Specifications Receipt of Bids (Bid Letting) Award Construction Contract Substantially Completion Date Final Completion April 18, 2022 April 22, 2022 April 22, 2022 May 2, 2022 May 19, 2022 June 6, 2022 November 3, 2023 April 5, 2024 RECOMMENDATION I recommend preliminary approval of the proposed plans, specifications, form of contract, and construction estimate for the Bee Branch Stormwater Pumping Station Project. I further recommend establishing the date of a public hearing and authorization to advertise for bids for the Project. BUDGETIMPACT The estimate of probable costs for the Project is as follows: Construction Contract $15,790,000 Contingency 720,000 Engineering 2,400,000 Total Project Cost $18,910,000 The Project is to be funded through a FY22 appropriation in the amount of $6,323,530 and an FY23 appropriation in the amount of $8,676,050, and FY24 appropriation in the amount of $3,910,420. The funding summary is as follows: CIP No. Fund Description 3402608 Bee Branch Gate & Pump Replacement Project 7202608 Bee Branch Gate & Pump Replacement Project 1022608 Bee Branch Gate & Pump Replacement Project Fund Amount $9,614,000 $7,896,000 1,400,000 The funding plan for the Project includes a combination of local, state, and federal funds as follows: State Sales Tax Increment Proceeds Stormwater Utility Construction Funds US EPA State Revolving Fund (SRF) Loan US EDA Disaster Grant DRA Distribution $9,614,000 2,796,000 2,600,000 2,500,000 1,400,000 TOTAL $18,910,000 To fund the Project, a rate increase to $9.00 was necessary in FY23, which was six years later than the schedule adopted through Ordinance 21-12. Table 1 compares the rates established through ordinances adopted in 2012, 2014, 2020, 2021, and 2022. Table 1. FY 17 FY 18 FY 19 FY 20 FY 21 FY 22 FY 23 FY24 Ordinance $9.00 $9.00 $9.00 $9.00 $9.00 $9.00 $9.00 $9.00 21-12 Ordinance $6.81 $7.27 $7.76 $8.29 $8.85 $9.00 $9.00 $9.00 16-14 Ordinance $8 29 $8 29 $8 29 $8 29 21-20 Ordinance $8.85 $8.85 $8.85 10-21 Ordinance $9.00 $9.00 13-22 Expected $9.45* FY24* *A rate increase of at least $9.45 is anticipated for FY24. Actual increase will be based on the FY24 budget recommendation To fund the Project, the rate will have to increase to at least $9.45 in FY24. If the City delays the project, it will risk losing the $2.5 million EDA grant that requires the work to be complete by April of 2024. ACTION TO BE TAKEN I respectfully request adoption of the attached resolutions preliminarily approving the proposed plans, specifications, form of contract, and construction estimate; establishing the date of the public hearing; and authorizing the City Engineer to advertise for bids for the Bee Branch Stormwater Pumping Station Project. Attach. Prepared by Deron Muehring CC' Crenna Brumwell, City Attorney Jenny Larson, Director of Finance & Budget John Klostermann, Public Works Director Arielle Swift, Assistant Public Works Director Deron Muehring, Civil Engineer Prepared by Deron Muehring City of Dubuque Engineering 50 W 13th St Dubuque IA 52001 (563)589 4270 Return to Adrienne N. Breitfelder City Clerk City of Dubuque, 50 W. 13th St. Dubuque, IA 52001 (563)589-4100 RESOLUTION NO. 136-22 PRELIMINARY APPROVAL OF PLANS, SPECIFICATIONS, FORM OF CONTRACT, AND ESTIMATED COST; SETTING DATE OF PUBLIC HEARING ON PLANS, SPECIFICATIONS, FORM OF CONTRACT, AND ESTIMATED COST; AND ORDERING THE ADVERTISEMENT FOR BIDS FOR THE BEE BRANCH STORMWATER PUMPING STATION PROJECT NOW THEREFORE, BE IT RESOLVED BY THE CITY COUNCIL OF THE CITY OF DUBUQUE, IOWA: Section 1. The proposed plans, specifications, form of contract and estimated cost for the Bee Branch Stormwater Pumping Station Project in the estimated amount $15,790,000.00, are hereby preliminarily approved and ordered filed in the office of the City Clerk for public inspection. Section 2. A public hearing will be held on the 2nd day of May, 2022, at 6:30 p.m. in the Historic Federal Building Council Chambers, 350 W. 6th Street, Dubuque, Iowa, at which time interested persons may appear and be heard for or against the proposed plans and specifications, form of contract and estimated cost of said Project, and the City Clerk be and is hereby directed to cause the attached notice of the time and place of such hearing to be published in a newspaper having general circulation in the City of Dubuque, Iowa, which notice shall be published not less than four days nor more than twenty days prior to the date of such hearing. At the hearing, any interested person may appear and file objections to the proposed plans, specifications, form of contract, or estimated cost of the Project. Section 3. The Bee Branch Stormwater Pumping Station Project is hereby ordered to be advertised for bids for construction - Section 4. The amount of the security to accompany each bid shall be in an amount which shall conform to the provisions of the Notice to Bidders hereby approved. Section 5. The City Engineer is hereby directed to advertise for bids for the construction of the improvements herein provided, by publishing the Notice to Bidders to be published in a newspaper having general circulation in the City of Dubuque, Iowa, on the City of Dubuque website and a contractor plan room service with statewide circulation, which notice shall be published not less than thirteen but not more than forty-five days before the date for filing bids before 2:00 p.m. on the 19th day of May 2022. Bids shall be opened and read by the City Clerk at said time and will be submitted to the City Council for final action at 6:30 p.m. on the 6th day of June 2022, in the Historic Federal Building Council Chambers, 350 West 6th Street, Dubuque, Iowa. Passed, approved, and adopted this 18th day of April ,2022. Atttte%st�: � " Adrienne N. Breitfelder, City Clerk CITY OF DUBUQUE, IOWA OFFICIAL NOTICE NOTICE OF PUBLIC HEARING ON PLANS, SPECIFICATIONS, FORM OF CONTRACT, AND ESTIMATED COST FOR THE BEE BRANCH STORMWATER PUMPING STATION PROJECT NOTICE IS HEREBY GIVEN: The City Council of the City of Dubuque, Iowa will hold a public hearing on the proposed plans, specifications, form of contract and estimated cost for the Bee Branch Stormwater Pumping Station Project, in accordance with the provisions of Chapter 26, Code of Iowa, at 6:30 p.m., on the 2nd day of May 2022, in the Historic Federal Building Council Chambers (and/or by virtual means), 350 West 6t" Street, Dubuque, Iowa. Said proposed plans, specifications, form of contract and estimated cost are now on file in the office of the City Clerk. At said hearing any interested person may appear and file objections thereto. The scope of the Project is as follows: The project includes the construction of a new stormwater pumping station on the protected side of the flood protection levee at the confluence of the Bee Branch Watershed with the Mississippi River. The overall structure will have approximate plan dimensions of 100 feet by 160 feet. The structure will be constructed on the west end of the existing twin 12-foot by 12-foot culverts. The structure is planned to include four 90,000 gallon per minute stormwater pumps, two 12-foot by 14-foot main gates for gravity flow from the 16th Street Basin (end of Bee Branch watershed), and two 12-foot by 9-foot emergency gates. Additionally, the contract will include an electrical control building to control the pump and two standby generators to provide backup power to the proposed stormwater pumps. The project will also include the removal of the existing stormwater pumps and demolition of portions of the existing stormwater pump station. The anticipated excavation limits for the proposed project is anticipated to be approximately 140 feet by 200 feet. All excavation will be on the protected side of the levee in the 16th Street basin. There will be no excavation on the river side of the flood protection levee. The excavated area will consist of an area protected during construction by sheeting to allow the excavation and construction of the structure. The proposed bottom of the portion of the structure is planned to be approximately 15 ft. below the flowlines of the existing culverts. Any visual or hearing -impaired persons needing special assistance or persons with special accessibility needs should contact the City Clerk's office at (563) 589-4120 or TDD at (563) 690-6678 at least 48 hours prior to the meeting. Published by order of the City Council given on the 18t" day of April 2022. Adrienne N. Breitfelder, City Clerk NOTICE TO BIDDERS CITY OF DUBUQUE PUBLIC IMPROVEMENT PROJECT BEE BRANCH STORMWATER PUMPING STATION 120.1 Time and Place for Filing Sealed Proposals Sealed Bids for the work comprising each improvement as stated below must be filed before 2:00 p.m. on May 19, 2022, in the Office of the City Clerk, City Hall - First Floor, 50 West 13t" Street, Dubuque, Iowa. 120.2 Time and Placed Sealed Proposals Will be Opened and Considered Sealed proposals will be opened and Bids tabulated at 2:00 p.m. on May 19, 2022, at City Hall - Conference Room A, 50 West 13' Street, Dubuque, Iowa, for consideration by the City Council at its meeting on June 6, 2022. The City of Dubuque, Iowa, reserves the right to reject any and all Bids. 120.3 Time for Commencement and Completion of Work Work on the Project must be commenced within ten (10) calendar days after the Notice to Proceed has been issued with a Substantial Completion date for operation by the City by February 3, 2024, and the Final Completion date by April 5, 2024. 120.4 Bid Security Each Bidder must accompany its Bid with a Bid security as security that the successful Bidder will enter into a contract for the work Bid upon and will furnish after the award of contract a corporate surety Bond, acceptable to the governmental entity, for the faithful performance of the contract, in an amount equal to one hundred percent of the amount of the contract. The Bid security must be in the amount of ten percent (10%) of the amount of the contract and must be in the form of a cashier's check or certified check drawn on a state -chartered or federally chartered bank, or a certified share draft drawn on a state -chartered or federally chartered credit union, or the Bidder may provide a Bid Bond with corporate surety satisfactory to the governmental entity. The Bid Bond must contain no conditions except as provided in this section. 120.5 Contract Documents Copies (paper or electronic) of the Contract Documents and Plans prepared by Origin Design Co. may be obtained by contacting Tri-State Blueprint/Rapids Reproductions at www.rapidsrepro.com (under the Origin Design Plan Room) or phone 563-556-3030. No plan deposit is required for either the paper or electronic plans and specifications. 20.6 Preference for Iowa Products and Labor To the extent allowed by Federal law and regulation, by virtue of statutory authority, preference will be given to products and provisions grown and coal produced within the State of Iowa, to the extent lawfully required under Iowa statutes. Due to Federal funding on this Project, no preference will be applied for evaluation of Bids. 120.7 Sales Tax The Bidder should not include State of Iowa sales tax in its Bid. A sales tax exemption certificate will be available for all material purchased in Iowa for incorporation into the Project. 120.8 Funding Requirements This project will be partially funded with Federal funds from the United States Department of Commerce, Economic Development Administration (EDA) and therefore is subject to the Federal laws and regulations associated with that program. The EDA has special requirements and certifications that are implemented into the Bidding Requirements and Contract Documents. This project has been awarded funds from the Iowa State Revolving fund (SRF) program. Any bidder or equipment supplier whose firm or affiliate is listed on the U.S. General Services Administration Excluded Parties List System website will be prohibited from the bidding process. Anyone submitting a bid who is listed in this website will be determined to be a nonresponsive bidder in accordance with 40 CFR Part 31. Contractors shall fully comply with the requirements, terms and conditions of the Disadvantaged Business Enterprise (DBE) requirements. Said requirements are contained in the specifications. DBEs are encouraged to participate in this project. Davis -Bacon prevailing wage rates will apply to this Project and are included in this Project Manual. Updates, as applicable, will be provided by addendum. Per State Funding Program requirements, American Iron and Steel (AIS) provisions apply to this Project. Iron and steel products for this project must be produced in the United States in accordance with the H.R. 3547 - Consolidated Appropriations Act 2014. Per Federal Funding Program requirements, Buy American provisions apply to this Project. Consistent with Executive Order 13858, Strengthening Buy -American Preferences for Infrastructure Projects, the Bidder is encouraged to use, to the greatest extent practicable, iron and aluminum as well as steel, cement, and other manufactured products produced in the United States in every contract, subcontract, or purchase order. 120.9 General Nature of Public Improvement Project Bee Branch Stormwater Pumping Station CIP # 7202608 & 3402608 The project includes the construction of a new stormwater pumping station on the protected side of the flood protection levee at the confluence of the Bee Branch Watershed with the Mississippi River. The overall structure will have approximate plan dimensions of 100' x 160'. The structure will be constructed on the west end of the existing twin 12'x12' culverts. The structure is planned to include four 90,000 gpm stormwater pumps, two 12'x14' main gates for gravity flow from the 16th Street Basin (end of Bee Branch watershed), and two 12'x9' emergency gates. Additionally, the contract will include an electrical controls building to control the pump and two standby generators to provide backup power to the proposed stormwater pumps. The project will also include the removal of the existing stormwater pumps and demolition of portions of the existing stormwater pump station. The anticipated excavation limits for the proposed project is anticipated to be approximately 140' x 200'. All excavation will be on the protected side of the levee in the 16th Street basin. There will be no excavation on the river side of the flood protection levee. The excavated area will consist of an area protected during construction by sheeting to allow the excavation and construction of the structure. The proposed bottom of the portion of the structure is planned to be approximately 15 ft. below the flowlines of the existing culverts. Construction Cost Estimate: $15,780,000 120.10 Pre -Bid Construction Conference Each prospective bidder is encouraged to attend the Pre -Bid Construction Conference to be held at 2:00 p.m. on May 3, 2022, at Conference Room A, City Hall, 50 W. 13'" Street, Dubuque, Iowa. Attendance by all prospective bidders is not mandatory but highly recommended. 120.11 Title VI — Non -Discrimination Clause The City of Dubuque in accordance with Title VI of the Civil Rights Act of 1964, 78 Stat. 252, 42 U.S.C. 2000d-2000d-4 and Title 49, Code of Federal Regulations, Department of Transportation, Subtitle A, Office of the Secretary, Part 21, Nondiscrimination in Federally assisted programs of the Department of Transportation issued pursuant to such Act, hereby notifies all bidders that it will affirmatively insure that in any contract entered into pursuant to this advertisement, minority business enterprises will be afforded full opportunity to submit bids in response to this invitation and will not be discriminated against on the grounds of race, color, national origin, sex, age, or disability in consideration for an award. 120.12 Notice to Bidders Distribution This Notice to be posted on April 20, 2022, at the following locations: 1. Iowa League of Cities Website 2. Master Builders/Construction Update Network Website 3. The City of Dubuque Website This Notice to Bidders to be published in the Telegraph Herald on April 22, 2022.